Psychometric Principles Applications — Lesson 7

This lesson covers the application of psychometric principles in three different scenarios: adiabatic mixing of two streams, drying, and cooling tower. The lesson starts with the explanation of adiabatic mixing, where two air streams with different temperatures and moisture contents are mixed to adjust the temperature and humidity of the resultant air stream. The lesson then moves on to the application of psychometric principles in drying, where the moisture content of a substance is reduced using hot air. The final application discussed is the cooling tower, where water is cooled using air. The lesson provides detailed calculations and examples for each application, making it easier to understand the concepts.

Video Highlights

01:38 - Insulated mixing chamber and its application in HVAC
03:49 - Application of SFE to the control volume
13:22 - Application of psychometric principles in drying
24:36 - Application of psychometric principles in cooling tower
33:00 - Mass balance of water and dry air in cooling tower

Key Takeaways

- Psychometric principles can be applied in various scenarios, including HVAC systems, drying processes, and cooling towers.
- In HVAC systems, the mixing of two air streams can adjust the moisture content or temperature of an air stream without adding or removing heat or water.
- In drying processes, psychometric principles can be used to control the temperature and humidity of a stream to achieve a desired value.
- In cooling towers, psychometric principles are used to cool down water before it is returned to a condenser.